RIM's heavily anticipated PlayBook tablet is getting closer to launch and they took a big step yesterday in getting ready with the announcement that app submissions are now being accepted. Better get your Adobe Air firing now, because a real treat is in store if you get your submission approved before launch: a free PlayBook of your very own.

Yep, the giveaway is official that was first announced at the PlayBook's unveiling and the rules are pretty simple. Develop an awesome app, get it approved by RIM, score a free PlayBook. Limit's one per customer, not one per app, so don't go thinking you'll be able to tile your shower with them.